[openib-general] ib_mthca not loaded by pci hotplug on SLES10 RC2 system

[Or Gerlitz]

I have a SLES10 RC2 system whose infiniband drivers are the
ones provided by the distro (ie not replaced by OFED).

I have noticed that ib_mthca is not loaded when the system comes up,
however it is loaded fine if i do it manually, and ping -f over ipoib
works fine so the system is very much operative.

Below are the output of modinfo and lspci and attached is /proc/config.gz

Doing a diff on drivers/infiniband and include/rdma with 2.6.16 they are
exactly the same as those of 2.6.16.16-1.6-smp (the sles10 kernel), the
HCA FW is 4.6.2

Anyone has an idea what might be the issue?

Or.

rosemary:/usr/src # uname -a
Linux rosemary 2.6.16.16-1.6-smp #1 SMP Mon May 22 14:37:02 UTC 2006 x86_64 x86_64 x86_64 GNU/Linux

rosemary:/usr/src # modinfo ib_mthca
filename:       /lib/modules/2.6.16.16-1.6-smp/kernel/drivers/infiniband/hw/mthca/ib_mthca.ko
author:         Roland Dreier
description:    Mellanox InfiniBand HCA low-level driver
license:        Dual BSD/GPL
version:        0.07
vermagic:       2.6.16.16-1.6-smp SMP gcc-4.1
depends:        ib_mad,ib_core
alias:          pci:v000015B3d00005A44sv*sd*bc*sc*i*
alias:          pci:v00001867d00005A44sv*sd*bc*sc*i*
alias:          pci:v000015B3d00006278sv*sd*bc*sc*i*
alias:          pci:v00001867d00006278sv*sd*bc*sc*i*
alias:          pci:v000015B3d00006282sv*sd*bc*sc*i*
alias:          pci:v00001867d00006282sv*sd*bc*sc*i*
alias:          pci:v000015B3d00006274sv*sd*bc*sc*i*
alias:          pci:v00001867d00006274sv*sd*bc*sc*i*
alias:          pci:v000015B3d00005E8Csv*sd*bc*sc*i*
alias:          pci:v00001867d00005E8Csv*sd*bc*sc*i*
srcversion:     8494F031EF8F0C77769CB89
parm:           msi:attempt to use MSI if nonzero (int)
parm:           msi_x:attempt to use MSI-X if nonzero (int)

rosemary:/usr/src # lspci
00:00.0 Host bridge: Intel Corporation E7520 Memory Controller Hub (rev 0c)
00:00.1 Class ff00: Intel Corporation E7525/E7520 Error Reporting Registers (rev 0c)
00:01.0 System peripheral: Intel Corporation E7520 DMA Controller (rev 0c)
00:02.0 PCI bridge: Intel Corporation E7525/E7520/E7320 PCI Express Port A (rev 0c)
00:06.0 PCI bridge: Intel Corporation E7520 PCI Express Port C (rev 0c)
00:1d.0 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #3 (rev 02)
00:1d.7 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB2 EHCI Controller (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev c2)
00:1f.0 ISA bridge: Intel Corporation 82801EB/ER (ICH5/ICH5R) LPC Interface Bridge (rev 02)
00:1f.1 IDE interface: Intel Corporation 82801EB/ER (ICH5/ICH5R) IDE Controller (rev 02)
00:1f.2 IDE interface: Intel Corporation 82801EB (ICH5) SATA Controller (rev 02)
00:1f.3 SMBus: Intel Corporation 82801EB/ER (ICH5/ICH5R) SMBus Controller (rev 02)
01:00.0 PCI bridge: Intel Corporation 6700PXH PCI Express-to-PCI Bridge A (rev 09)
01:00.2 PCI bridge: Intel Corporation 6700PXH PCI Express-to-PCI Bridge B (rev 09)
03:04.0 Ethernet controller: Intel Corporation 82546GB Gigabit Ethernet Controller (rev 03)
03:04.1 Ethernet controller: Intel Corporation 82546GB Gigabit Ethernet Controller (rev 03)
04:00.0 InfiniBand: Mellanox Technologies MT25208 InfiniHost III Ex (Tavor compatibility mode) (rev a0)
05:0c.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27)
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